CVE-2021-0252

Summary

NFX Series devices using Juniper Networks Junos OS are susceptible to a local code execution vulnerability thereby allowing an attacker to elevate their privileges via the Junos Device Management Daemon (JDMD) process. This issue affects Juniper Networks Junos OS on NFX Series: 18.1 version 18.1R1 and later versions prior to 18.2R3-S5; 18.3 versions prior to 18.3R2-S4, 18.3R3-S3; 18.4 versions prior to 18.4R2-S5, 18.4R3-S4; 19.1 versions prior to 19.1R1-S3, 19.1R2; 19.2 versions prior to 19.2R1-S5, 19.2R2. This issue does not affect: Juniper Networks Junos OS versions prior to 18.1R1. This issue does not affect the JDMD as used by Junos Node Slicing such as External Servers use in conjunction with Junos Node Slicing and In-Chassis Junos Node Slicing on MX480, MX960, MX2008, MX2010, MX2020.

Affected Software

VendorProductVersion RangeStatus
Juniper NetworksJunos OS18.1R1 < 18.1*affected
Juniper NetworksJunos OS18.2 < 18.2R3-S5affected
Juniper NetworksJunos OS18.3 < 18.3R2-S4, 18.3R3-S3affected
Juniper NetworksJunos OS18.4 < 18.4R2-S5, 18.4R3-S4affected
Juniper NetworksJunos OS19.1 < 19.1R1-S3, 19.1R2affected
Juniper NetworksJunos OS19.2 < 19.2R1-S5, 19.2R2affected
Juniper NetworksJunos OSunspecified < 18.1R1unaffected

Weaknesses

  • CWE-77: CWE-77 Improper Neutralization of Special Elements used in a Command ('Command Injection')

Workarounds

There are no viable workarounds for these issue.

To reduce the risk of exploitation of this issue, use access lists or firewall filters to limit access to only trusted administrative networks, hosts and users.

ADP Enrichment

CVE Program Container

Additional References

References